https://www.creative-sz.com/products/holter-ecg-monitor/ Holter ECG Monitor is a device used to continuously monitor the electrical activity of the heart over a period of time. It is a portable device that records the heart's electrical activity for 24-48 hours or longer, depending on the type of monitor. It is used to monitor heart rhythm disturbances, like arrhythmia, or detect any possible problems.All Rights Reserved